171 lines
4.2 KiB
C++
171 lines
4.2 KiB
C++
/*
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* Copyright (C) 2006 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _WIDGETS_ARDOUR_FADER_H_
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#define _WIDGETS_ARDOUR_FADER_H_
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#include <cmath>
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#include <stdint.h>
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#include <gdkmm.h>
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#include <gtkmm/adjustment.h>
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#include "gtkmm2ext/cairo_widget.h"
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#include "gtkmm2ext/colors.h"
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#include "widgets/visibility.h"
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namespace ArdourWidgets {
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class LIBWIDGETS_API ArdourFader : public CairoWidget
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{
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public:
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ArdourFader (Gtk::Adjustment& adjustment, int orientation, int span, int girth);
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virtual ~ArdourFader ();
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static void flush_pattern_cache();
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sigc::signal<void,int> StartGesture;
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sigc::signal<void,int> StopGesture;
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sigc::signal<void> OnExpose;
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void set_default_value (float);
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void set_text (const std::string&, bool centered = true, bool expose = true);
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enum Tweaks {
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NoShowUnityLine = 0x1,
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NoButtonForward = 0x2,
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NoVerticalScroll = 0x4,
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};
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Tweaks tweaks() const { return _tweaks; }
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void set_tweaks (Tweaks);
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void set_bg (Gtkmm2ext::Color);
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void set_fg (Gtkmm2ext::Color);
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void unset_bg ();
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void unset_fg ();
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protected:
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void on_size_request (GtkRequisition*);
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void on_size_allocate (Gtk::Allocation& alloc);
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void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
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bool on_grab_broken_event (GdkEventGrabBroken*);
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bool on_button_press_event (GdkEventButton*);
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bool on_button_release_event (GdkEventButton*);
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bool on_motion_notify_event (GdkEventMotion*);
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bool on_scroll_event (GdkEventScroll* ev);
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bool on_enter_notify_event (GdkEventCrossing* ev);
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bool on_leave_notify_event (GdkEventCrossing* ev);
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void on_state_changed (Gtk::StateType);
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void on_style_changed (const Glib::RefPtr<Gtk::Style>&);
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enum Orientation {
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VERT,
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HORIZ,
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};
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private:
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Glib::RefPtr<Pango::Layout> _layout;
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std::string _text;
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Tweaks _tweaks;
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Gtk::Adjustment& _adjustment;
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int _text_width;
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int _text_height;
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int _span, _girth;
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int _min_span, _min_girth;
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int _orien;
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cairo_pattern_t* _pattern;
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bool _hovering;
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GdkWindow* _grab_window;
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double _grab_loc;
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double _grab_start;
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bool _dragging;
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float _default_value;
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int _unity_loc;
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bool _centered_text;
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sigc::connection _parent_style_change;
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Widget * _current_parent;
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Gdk::Color get_parent_bg ();
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Gtkmm2ext::Color explicit_bg;
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bool have_explicit_bg;
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Gtkmm2ext::Color explicit_fg;
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bool have_explicit_fg;
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void create_patterns();
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void adjustment_changed ();
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void set_adjustment_from_event (GdkEventButton *);
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void update_unity_position ();
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int display_span ();
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Gdk::Color bg_color (Gtk::StateType);
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Gdk::Color fg_color (Gtk::StateType);
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struct FaderImage {
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cairo_pattern_t* pattern;
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double fr;
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double fg;
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double fb;
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double br;
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double bg;
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double bb;
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int width;
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int height;
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FaderImage (cairo_pattern_t* p,
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double afr, double afg, double afb,
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double abr, double abg, double abb,
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int w, int h)
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: pattern (p)
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, fr (afr)
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, fg (afg)
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, fb (afb)
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, br (abr)
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, bg (abg)
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, bb (abb)
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, width (w)
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, height (h)
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{}
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bool matches (double afr, double afg, double afb,
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double abr, double abg, double abb,
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int w, int h) {
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return width == w &&
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height == h &&
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afr == fr &&
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afg == fg &&
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afb == fb &&
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abr == br &&
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abg == bg &&
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abb == bb;
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}
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};
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static std::list<FaderImage*> _patterns;
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static cairo_pattern_t* find_pattern (double afr, double afg, double afb,
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double abr, double abg, double abb,
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int w, int h);
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};
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} /* namespace */
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#endif /* __gtkmm2ext_pixfader_h__ */
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